Royal Purple is the only oil that uses molybdenum disulfide, which is a good lubricant, but the moly particles can come out of suspension, and it agglomerates, can clog filters, and settle in oil pans. That is why no other oil company uses it. The viscosity with RP is actually poor in comparison tests, as is the volatility rate and the wear properties. A lot of marketing BS in other words. SImlar to Z-max who makes a lot of claims and were recently sued by the FTC for false advertising, as it not only does nothing, it acutally dobules the bearing corrosion versus not using it. Analysis shows z max is primarily mineral oil.

yeah i dont kno why all these people use it... the oil sucks for the price.. redline or ams oil are great and if u want to spend some money run motul <3

im running rotella t-6 for 3 k just to get the zdp and sulfates into my hemi then its coming out and ams oil is going in. Moul is in the diffs

Royal Purple is the only oil that uses molybdenum disulfide, which is a good lubricant, but the moly particles can come out of suspension, and it agglomerates, can clog filters, and settle in oil pans. That is why no other oil company uses it. The viscosity with RP is actually poor in comparison tests, as is the volatility rate and the wear properties. A lot of marketing BS in other words. SImlar to Z-max who makes a lot of claims and were recently sued by the FTC for false advertising, as it not only does nothing, it acutally dobules the bearing corrosion versus not using it. Analysis shows z max is primarily mineral oil.

The moly thing is ooooold news and actually A LOT of oils use it. RP is overpriced and what oil company doesn't throw around marketing BS. There are plenty of guys with oil analysis results on the BITOG forums showing RP superior to mobil 1 etc... not saying its the end all but definitely not in the category your putting it in...I'd like to know where your getting the moly information???